# IronIsoSurface

VTKExamples/Cxx/VisualizationAlgorithms/IronIsoSurface

### Code

IronIsoSurface.cxx

    #include <vtkActor.h>
    #include <vtkCamera.h>
    #include <vtkContourFilter.h>
    #include <vtkNamedColors.h>
    #include <vtkOutlineFilter.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkProperty.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkRenderer.h>
    #include <vtkStructuredPointsReader.h>

    int main(int argc, char *argv[])
    {
      if (argc < 2)
      {
        std::cout << "Usage: " << argv[0] << " ironProt.vtk" << std::endl;
        return EXIT_SUCCESS;
      }

    // Create the RenderWindow, Renderer and both Actors
    //
      vtkSmartPointer<vtkNamedColors> colors =
        vtkSmartPointer<vtkNamedColors>::New();

      vtkSmartPointer<vtkRenderer> ren1 =
        vtkSmartPointer<vtkRenderer>::New();

      vtkSmartPointer<vtkRenderWindow> renWin =
        vtkSmartPointer<vtkRenderWindow>::New();
      renWin->AddRenderer(ren1);

      vtkSmartPointer<vtkRenderWindowInteractor> iren =
        vtkSmartPointer<vtkRenderWindowInteractor>::New();
      iren->SetRenderWindow(renWin);

    // create pipeline
    //
      vtkSmartPointer<vtkStructuredPointsReader> reader =
        vtkSmartPointer<vtkStructuredPointsReader>::New();
      reader->SetFileName(argv[1]);

      vtkSmartPointer<vtkContourFilter> iso =
        vtkSmartPointer<vtkContourFilter>::New();
      iso->SetInputConnection(reader->GetOutputPort());
      iso->SetValue(0, 128);

      vtkSmartPointer<vtkPolyDataMapper> isoMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      isoMapper->SetInputConnection(iso->GetOutputPort());
      isoMapper->ScalarVisibilityOff();

      vtkSmartPointer<vtkActor> isoActor =
        vtkSmartPointer<vtkActor>::New();
      isoActor->SetMapper(isoMapper);
      isoActor->GetProperty()->SetColor(colors->GetColor3d("Banana").GetData());

      vtkSmartPointer<vtkOutlineFilter> outline =
        vtkSmartPointer<vtkOutlineFilter>::New();
      outline->SetInputConnection(reader->GetOutputPort());

      vtkSmartPointer<vtkPolyDataMapper> outlineMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      outlineMapper->SetInputConnection(outline->GetOutputPort());

      vtkSmartPointer<vtkActor> outlineActor =
        vtkSmartPointer<vtkActor>::New();
      outlineActor->SetMapper(outlineMapper);

    // Add the actors to the renderer, set the background and size
    //
      ren1->AddActor(outlineActor);
      ren1->AddActor(isoActor);
      ren1->SetBackground(colors->GetColor3d("SlateGray").GetData());
      renWin->SetSize(640, 512);

    // render the image
    //
      ren1->ResetCamera();
      ren1->GetActiveCamera()->Azimuth(30);
      ren1->GetActiveCamera()->Elevation(30);
      renWin->Render();
      iren->Start();
      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(IronIsoSurface)

    find_package(VTK REQUIRED)
    include(${VTK_USE_FILE})

    add_executable(IronIsoSurface MACOSX_BUNDLE IronIsoSurface.cxx )

    target_link_libraries(IronIsoSurface ${VTK_LIBRARIES})

### Download and Build IronIsoSurface

Click here to download IronIsoSurface and its CMakeLists.txt file. Once the tarball IronIsoSurface.tar has been downloaded and extracted,

    cd IronIsoSurface/build

If VTK is installed:

    cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

    cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

    make

and run it:

    ./IronIsoSurface

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.